1129863349 has 4 divisors (see below), whose sum is σ = 1129930636. Its totient is φ = 1129796064.

The previous prime is 1129863323. The next prime is 1129863353. The reversal of 1129863349 is 9433689211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 495730225 + 634133124 = 22265^2 + 25182^2 .

It is a cyclic number.

It is not a de Polignac number, because 1129863349 - 2¹¹ = 1129861301 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1129863299 and 1129863308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129863379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14707 + ... + 49759.

It is an arithmetic number, because the mean of its divisors is an integer number (282482659).

Almost surely, 2^1129863349 is an apocalyptic number.

It is an amenable number.

1129863349 is a deficient number, since it is larger than the sum of its proper divisors (67287).

1129863349 is an equidigital number, since it uses as much as digits as its factorization.

1129863349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67286.

The product of its digits is 279936, while the sum is 46.

The square root of 1129863349 is about 33613.4400054502. The cubic root of 1129863349 is about 1041.5384494758.

It can be divided in two parts, 11298 and 63349, that added together give a palindrome (74647).

The spelling of 1129863349 in words is "one billion, one hundred twenty-nine million, eight hundred sixty-three thousand, three hundred forty-nine".